Ratio decidendi:  the rules of electoral law must take into account such factors as internal labour migration, seasonal works, periods of countryside vacations and works, and conform to the criteria of necessity, reasonableness and proportionality, so that not to lead to the violation of rights and freedoms guaranteed by the Constitution. The contested rules – to the extent they permit early voting only in a very limited number of cases – preclude in a mandatory fashion the organisation of early voting on other grounds, thus restricting active electoral right of those citizens who for a good reason cannot on the day of voting arrive to the polling place, this restriction not always being compensated by other guarantees and thereby capable of discouraging a citizen about taking part in voting when he may not participate in voting at the place of residence for such reasons as leave from work, business trip, the schedule of work or studies, the performance of public duties. Since the rights of citizens to the freedom of movement, labour, rest, protection of health, education are equally recognised and protected constitutional values as electoral rights, the legal regulation which puts a citizen in the situation of involuntary choice as to which of his constitutional rights he must repudiate in order to make avail of another right, must be regarded as impinging upon this another right and denying it (it least in this particular circumstances). This regulation is all the more unjustified that legislation on referenda does not contain such restrictions.